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Magnetic resonance imaging evaluation in neoadjuvant therapy of locally advanced rectal cancer: a systematic review Cover

Magnetic resonance imaging evaluation in neoadjuvant therapy of locally advanced rectal cancer: a systematic review

Open Access
|Aug 2017

Figures & Tables

Figure 1

T1 weighted post contrast scan obtained before (A)-(B) and after (C)-(D) chemo-radiotherapy (CRT). The analysis of time intensity curve (TIC) show areas with rapid contrast uptake and fast discharge (B). After CRT, on the same areas no pathological contrast uptake is present confirming that hypo-intense tissue are tumour nests but only residual inflammation due to CRT.
T1 weighted post contrast scan obtained before (A)-(B) and after (C)-(D) chemo-radiotherapy (CRT). The analysis of time intensity curve (TIC) show areas with rapid contrast uptake and fast discharge (B). After CRT, on the same areas no pathological contrast uptake is present confirming that hypo-intense tissue are tumour nests but only residual inflammation due to CRT.

Figure 2

Included and excluded studies in systematic review.DCE-MRI = dynamic contrast enhanced MRI; DWI = diffusion weighted imaging
Included and excluded studies in systematic review.DCE-MRI = dynamic contrast enhanced MRI; DWI = diffusion weighted imaging

Figure 3

Forest plot subdivide for imaging modality including sensitivity and specificity estimates and their confidence intervals (95%).CI = confidence interval; FN = false negative; FP = false positive; SIS = standardized index of shape; TN = true negative; TP = true positive
Forest plot subdivide for imaging modality including sensitivity and specificity estimates and their confidence intervals (95%).CI = confidence interval; FN = false negative; FP = false positive; SIS = standardized index of shape; TN = true negative; TP = true positive

Figure 4

Estimated summary ROC curves and original data points for imaging techniques.DCE-MRI = dynamic contrast enhanced MRI; DWI = diffusion weighted imaging
Estimated summary ROC curves and original data points for imaging techniques.DCE-MRI = dynamic contrast enhanced MRI; DWI = diffusion weighted imaging

Figure 5

Assessment of bias risk and applicability analysis.
Assessment of bias risk and applicability analysis.

Performance pooled analysis for MRI, diffusion weighted imaging (DWI), dynamic contrast enhanced MRI (DCE-MRI), PET/CT and multimodal imaging

PerformancePooled AnalysisSensitivitySpecificityPositivepredictive valueNegativepredictive valueAccuracy
MRI75,8478,2174,3479,5577,13
DCE-MRI87,1884,1582,4288,5185,55
DWI75,9579,2584,5168,8577,27
PET/CT80,2583,0879,2783,9281,82
MULTIMODAL IMAGING85,0096,0889,4794,2392,96

Number of studies and participants for each diagnostic modality

Diagnostic modalityStudiesParticipants
MRI6329
DCE-MRI6340
DWI4133
PET/CT7366
MULTIMODAL IMAGING270

Main characteristics summary of included studies in the systematic review: for each study the table reports imaging modality used; number of patients examined; parameters examined

Imaging modalityAuthorsApproachN. patientsGold standard
Barbaro et al.69Score system53TNM
Denecke et al.46Morphologic criteria23TNM
MRIDresen et al.45Morphologic + volumetric criteria67TNM
Intven et al.56 Relative volume51TRG
Petrillo et al.52Score system106TRG
Petrillo et al.64Relative volume29TRG
Intven et al.56Relative Ktrans51TRG
Kim et al.55Relative Ktrans50TNM
DCE-MRIMartens et al.67TIC slope30TRG
Petrillo et al.52TIC visual inspection106TRG
Petrillo et al.64Relative volume29TRG
Petrillo et al.53Standardized index of shape74TRG
Birlik et al.65ADC43TRG
DWIIppolito et al.40ADC30TRG
Monguzzi et al.68ADC31TRG
Petrillo et al.64Relative volume29TRG
MULTIMODAL IMAGINGIntven et al.56Relative volume + relative Ktrans51TRG
Marouf et al.63MRI + DWI Score system19TNM
Altini et al.36SUV68TRG
Capirci et al.42SUV81TRG
Ippolito et al.40SUV30TRG
PET/CTMurcia et al.43SUV41TRG
Sun et al.41Total lesion glycolysis35TRG
Yoon et al.66Dual-point index61TRG
Palma et al.73SUV50TRG
DOI: https://doi.org/10.1515/raon-2017-0032 | Journal eISSN: 1581-3207 | Journal ISSN: 1318-2099
Language: English
Page range: 252 - 262
Submitted on: Dec 29, 2016
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Accepted on: Jun 21, 2017
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Published on: Aug 16, 2017
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2017 Roberta Fusco, Mario Petrillo, Vincenza Granata, Salvatore Filice, Mario Sansone, Orlando Catalano, Antonella Petrillo, published by Association of Radiology and Oncology
This work is licensed under the Creative Commons Attribution 4.0 License.